Manuscript Summary: The manuscript contains Ambrose's treatise De officiis. A list of chapters (1r-3r, 65v-67r, 103v-104v) precedes each of the three books. The first two books are introduced by an artistic tendrilated initial on a dark-brown (3v) or red (67r) background. Rubricated lines and initials divide the rest of the text. The dedicatory poem on 1r, in capitals filling two lines attests that the text is an offering of Abbot Frowin of Engelberg (1143-1178) to the monastery's patron saint Mary. (grd)